add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/net/l2tp/l2tp_ppp.c
..
..
@@ -651,6 +651,65 @@
651
651
 	return mtu - PPPOL2TP_HEADER_OVERHEAD;
652
652
 }
653
653
 
654
+static struct l2tp_tunnel *pppol2tp_tunnel_get(struct net *net,
655
+					       const struct l2tp_connect_info *info,
656
+					       bool *new_tunnel)
657
+{
658
+	struct l2tp_tunnel *tunnel;
659
+	int error;
660
+
661
+	*new_tunnel = false;
662
+
663
+	tunnel = l2tp_tunnel_get(net, info->tunnel_id);
664
+
665
+	/* Special case: create tunnel context if session_id and
666
+	 * peer_session_id is 0. Otherwise look up tunnel using supplied
667
+	 * tunnel id.
668
+	 */
669
+	if (!info->session_id && !info->peer_session_id) {
670
+		if (!tunnel) {
671
+			struct l2tp_tunnel_cfg tcfg = {
672
+				.encap = L2TP_ENCAPTYPE_UDP,
673
+			};
674
+
675
+			/* Prevent l2tp_tunnel_register() from trying to set up
676
+			 * a kernel socket.
677
+			 */
678
+			if (info->fd < 0)
679
+				return ERR_PTR(-EBADF);
680
+
681
+			error = l2tp_tunnel_create(info->fd,
682
+						   info->version,
683
+						   info->tunnel_id,
684
+						   info->peer_tunnel_id, &tcfg,
685
+						   &tunnel);
686
+			if (error < 0)
687
+				return ERR_PTR(error);
688
+
689
+			l2tp_tunnel_inc_refcount(tunnel);
690
+			error = l2tp_tunnel_register(tunnel, net, &tcfg);
691
+			if (error < 0) {
692
+				kfree(tunnel);
693
+				return ERR_PTR(error);
694
+			}
695
+
696
+			*new_tunnel = true;
697
+		}
698
+	} else {
699
+		/* Error if we can't find the tunnel */
700
+		if (!tunnel)
701
+			return ERR_PTR(-ENOENT);
702
+
703
+		/* Error if socket is not prepped */
704
+		if (!tunnel->sock) {
705
+			l2tp_tunnel_dec_refcount(tunnel);
706
+			return ERR_PTR(-ENOENT);
707
+		}
708
+	}
709
+
710
+	return tunnel;
711
+}
712
+
654
713
 /* connect() handler. Attach a PPPoX socket to a tunnel UDP socket
655
714
  */
656
715
 static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
..
..
@@ -664,7 +723,6 @@
664
723
 	struct pppol2tp_session *ps;
665
724
 	struct l2tp_session_cfg cfg = { 0, };
666
725
 	bool drop_refcnt = false;
667
-	bool drop_tunnel = false;
668
726
 	bool new_session = false;
669
727
 	bool new_tunnel = false;
670
728
 	int error;
..
..
@@ -672,6 +730,14 @@
672
730
 	error = pppol2tp_sockaddr_get_info(uservaddr, sockaddr_len, &info);
673
731
 	if (error < 0)
674
732
 		return error;
733
+
734
+	/* Don't bind if tunnel_id is 0 */
735
+	if (!info.tunnel_id)
736
+		return -EINVAL;
737
+
738
+	tunnel = pppol2tp_tunnel_get(sock_net(sk), &info, &new_tunnel);
739
+	if (IS_ERR(tunnel))
740
+		return PTR_ERR(tunnel);
675
741
 
676
742
 	lock_sock(sk);
677
743
 
..
..
@@ -684,62 +750,6 @@
684
750
 	error = -EALREADY;
685
751
 	if (sk->sk_user_data)
686
752
 		goto end; /* socket is already attached */
687
-
688
-	/* Don't bind if tunnel_id is 0 */
689
-	error = -EINVAL;
690
-	if (!info.tunnel_id)
691
-		goto end;
692
-
693
-	tunnel = l2tp_tunnel_get(sock_net(sk), info.tunnel_id);
694
-	if (tunnel)
695
-		drop_tunnel = true;
696
-
697
-	/* Special case: create tunnel context if session_id and
698
-	 * peer_session_id is 0. Otherwise look up tunnel using supplied
699
-	 * tunnel id.
700
-	 */
701
-	if (!info.session_id && !info.peer_session_id) {
702
-		if (!tunnel) {
703
-			struct l2tp_tunnel_cfg tcfg = {
704
-				.encap = L2TP_ENCAPTYPE_UDP,
705
-			};
706
-
707
-			/* Prevent l2tp_tunnel_register() from trying to set up
708
-			 * a kernel socket.
709
-			 */
710
-			if (info.fd < 0) {
711
-				error = -EBADF;
712
-				goto end;
713
-			}
714
-
715
-			error = l2tp_tunnel_create(info.fd,
716
-						   info.version,
717
-						   info.tunnel_id,
718
-						   info.peer_tunnel_id, &tcfg,
719
-						   &tunnel);
720
-			if (error < 0)
721
-				goto end;
722
-
723
-			l2tp_tunnel_inc_refcount(tunnel);
724
-			error = l2tp_tunnel_register(tunnel, sock_net(sk),
725
-						     &tcfg);
726
-			if (error < 0) {
727
-				kfree(tunnel);
728
-				goto end;
729
-			}
730
-			drop_tunnel = true;
731
-			new_tunnel = true;
732
-		}
733
-	} else {
734
-		/* Error if we can't find the tunnel */
735
-		error = -ENOENT;
736
-		if (!tunnel)
737
-			goto end;
738
-
739
-		/* Error if socket is not prepped */
740
-		if (!tunnel->sock)
741
-			goto end;
742
-	}
743
753
 
744
754
 	if (tunnel->peer_tunnel_id == 0)
745
755
 		tunnel->peer_tunnel_id = info.peer_tunnel_id;
..
..
@@ -841,8 +851,7 @@
841
851
 	}
842
852
 	if (drop_refcnt)
843
853
 		l2tp_session_dec_refcount(session);
844
-	if (drop_tunnel)
845
-		l2tp_tunnel_dec_refcount(tunnel);
854
+	l2tp_tunnel_dec_refcount(tunnel);
846
855
 	release_sock(sk);
847
856
 
848
857
 	return error;